DynoMax P/N 39523
"Rockcrawler system"
This system relocates the muffler in front of the rear axle, tucked up nice and tight and away from those rocks! The muffler used in this system is our stainless steel polished Ultra Flo Welded round muffler.

DynoMax P/N 39522
Evolution Competition System
This system relocates the muffler in front of the rear axle and dumps right before the rear axle. Check with state laws on where your exhaust needs to exit.